Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography, Volume 34, Issue 4, 6 1 2021, Pages 451-452 Left Ventricular Myocardial Work Indices: A Potential Step Forward for the Assessment of Myocardial Performance in Severe Aortic Stenosis: Reply to "Is It Fair to Use the Current Estimation of Myocardial Work in Patients with Significant Aortic Stenosis?" Fortuni F, Bax JJ, Delgado V, Ajmone Marsan N